The document discusses the history and definition of biotechnology, illustrating its evolution from ancient practices using microorganisms in food production to modern genetic engineering. Key milestones include the introduction of the term biotechnology in 1917 by Karl Ereky and significant discoveries by figures such as Louis Pasteur, Gregor Mendel, and others throughout the 19th and early 20th centuries. It emphasizes the foundation of biotechnology laid by advancements in microbiology and genetics, leading to the development of recombinant DNA technology in 1973.